NSIS/Source/exehead/bgbg.c
eccles c05a873977 Small space-saving optimisation
git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@687 212acab6-be3b-0410-9dea-997c60f758d6
2002-08-11 18:58:41 +00:00

90 lines
2.8 KiB
C

#include <windows.h>
#include "resource.h"
#include "config.h"
#ifdef NSIS_SUPPORT_BGBG
static int m_color1, m_color2, m_textcolor;
static LRESULT CALLBACK BG_WndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_PAINT:
{
static PAINTSTRUCT ps;
HFONT newFont, oldFont;
HDC hdc=BeginPaint(hwnd,&ps);
RECT r;
int y;
GetClientRect(hwnd,&r);
// this portion by Drew Davidson, drewdavidson@mindspring.com
// JF: made slower, reduced to 4 pixels high, because I like how it looks better/
for (y = r.top; y < r.bottom; y += 4)
{
int rv,gv,bv;
RECT rect;
HBRUSH brush;
rv = (GetRValue(m_color2) * y + GetRValue(m_color1) * (r.bottom - y)) / r.bottom;
gv = (GetGValue(m_color2) * y + GetGValue(m_color1) * (r.bottom - y)) / r.bottom;
bv = (GetBValue(m_color2) * y + GetBValue(m_color1) * (r.bottom - y)) / r.bottom;
brush = CreateSolidBrush(RGB(rv,gv,bv));
SetRect(&rect, r.left, y, r.right, y+4);
// note that we don't need to do "SelectObject(hdc, brush)"
// because FillRect lets us specify the brush as a parameter.
FillRect(hdc, &rect, brush);
DeleteObject(brush);
}
if (m_textcolor != -1)
{
newFont = CreateFont(40,0,0,0,FW_BOLD,TRUE,FALSE,FALSE,DEFAULT_CHARSET,OUT_DEFAULT_PRECIS,CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,DEFAULT_PITCH,"Garamond");
if (newFont)
{
static char buf[256];
r.left+=16;
r.top+=8;
GetWindowText(hwnd,buf,sizeof(buf));
SetBkMode(hdc,TRANSPARENT);
SetTextColor(hdc,m_textcolor);
oldFont = SelectObject(hdc,newFont);
DrawText(hdc,buf,-1,&r,DT_TOP|DT_LEFT|DT_SINGLELINE);
SelectObject(hdc,oldFont);
DeleteObject(newFont);
}
}
EndPaint(hwnd,&ps);
}
return 0;
}
return DefWindowProc(hwnd,uMsg,wParam,lParam);
}
HWND bgWnd_Init(HINSTANCE hInstance, char *title, int color1, int color2, int color3)
{
RECT vp;
char classname[4]="_Nb";
static WNDCLASS wc;
wc.style = CS_VREDRAW | CS_HREDRAW;
wc.lpfnWndProc = BG_WndProc;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(hInstance,MAKEINTRESOURCE(IDI_ICON2));
wc.hCursor = LoadCursor(NULL,IDC_ARROW);
wc.lpszClassName = classname;
if (!RegisterClass(&wc)) return 0;
m_color1=color1;
m_color2=color2;
m_textcolor=color3;
SystemParametersInfo(SPI_GETWORKAREA, 0, &vp, 0);
return CreateWindow(classname,title,WS_VISIBLE|WS_OVERLAPPED|WS_THICKFRAME|WS_CAPTION|WS_SYSMENU|WS_MAXIMIZEBOX|WS_MINIMIZEBOX,
vp.left,vp.top,vp.right-vp.left,vp.bottom-vp.top,GetDesktopWindow(),NULL,hInstance,NULL);
}
#endif //NSIS_SUPPORT_BGBG